Cutting device for degradable packaging bag production

Abstract

The invention relates to the technical field of packaging bag cutting devices, and particularly discloses a degradable packaging bag production cutting device which comprises a first machine table and a second machine table, the upper end face of the first machine table is fixedly connected with an adjusting mechanism through two first air cylinders, and an edge cutting cutter is arranged in the adjusting mechanism; a slitting mechanism is fixedly connected to the upper end face of the second machine table, a transition mechanism and a bag pressing mechanism are arranged on the side, close to the first machine table, of the second machine table, the transition mechanism is used for adjusting the tensioning degree of packaging bags, and the bag pressing mechanism is used for clamping the entered packaging bags; the adjusting mechanism comprises an outer frame, a two-way lead screw is rotationally arranged on one side of the interior of the outer frame, and a guide rod is fixed to the other side of the interior of the outer frame. Compared with the prior art, fewer waste edges are generated, material consumption is reduced, the generated waste edges are in a continuous strip shape and have no middle hollow area, the size after rolling is smaller, and storage and transportation during subsequent recycling are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag cutting devices, and in particular to a cutting device for producing degradable packaging bags. Background Art

[0002] Degradable packaging bags are packaging bags that can significantly change the chemical structure of packaging materials through processes such as microbial action, photodegradation, and thermal oxidation, and ultimately decompose into environmentally friendly substances such as carbon dioxide, water, and biomass.

[0003] When producing degradable packaging bags, a cutting device is required to cut the rolled film material to form individual packaging bags. Currently, packaging bags are mostly cut by die-cutting. Die-cutting can meet the cutting needs of various special-shaped packaging bags, but it produces a lot of waste edges. In particular, many packaging bags currently only have special special-shaped structures on both sides. At this time, die-cutting is still used for cutting and forming, which will bring a lot of unnecessary waste edges and cause material waste. Since the production cost of degradable materials is higher than that of ordinary film materials, and the process is more complicated, too much waste edges will increase production costs and energy consumption for subsequent recycling and processing, which is inconsistent with the environmental protection attributes of degradable packaging bags.

[0004] Therefore, those skilled in the art provide a cutting device for producing degradable packaging bags. Summary of the invention

[0005] The purpose of the present invention is to provide a cutting device for producing degradable packaging bags to solve the following technical problems:

[0006] How to reduce the waste edge generated when cutting double-sided special-shaped biodegradable packaging bags;

[0007] How to improve connectivity at work.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A cutting device for producing degradable packaging bags, comprising a machine platform 1 and a machine platform 2, wherein the upper end surface of the machine platform 1 is fixedly connected to an adjustment mechanism via two cylinders 1, and a trimming knife is arranged inside the adjustment mechanism;

[0010] The upper end surface of the second machine is fixedly connected with a slitting mechanism, and a transition mechanism and a bag pressing mechanism are arranged on the side of the second machine close to the first machine, wherein the transition mechanism is used to adjust the tension of the packaging bag, and the bag pressing mechanism is used to clamp the incoming packaging bag;

[0011] The adjustment mechanism comprises an outer frame, a bidirectional screw is rotated on one side of the inner part of the outer frame, and a guide rod is fixed on the other side, the bidirectional screw is driven by a second motor, and adjustment seats are sleeved on both sides between the bidirectional screw and the guide rod;

[0012] There are two edge trimming cutters which are symmetrically mounted on two adjustment seats. The edge trimming cutters include a rotating seat which is rotatably connected to the lower end surface of the adjustment seat and driven by a third motor. A cutting knife is rotatably mounted at the lower end of the rotating seat and driven by a fourth motor.

[0013] A waste material winding rack is arranged between the first machine and the second machine.

[0014] Furthermore, the waste winding rack comprises a mobile rack, a transmission shaft is rotatably arranged on the lower side of the mobile rack, the transmission shaft is driven by a motor 5, winding rollers are rotatably arranged on both sides of the upper end of the mobile rack, the transmission shaft drives the winding rollers to rotate via a belt and a pulley, and a plurality of self-locking universal wheels are rotatably connected to the lower end surface of the mobile rack;

[0015] Furthermore, one end of the machine platform 2 close to the machine platform 1 is set as an inclined plane, and the bag pressing mechanism is installed on the inclined plane. The bag pressing mechanism includes a pressing frame, and the upper and lower sides of the inner part of the pressing frame are respectively provided with a lower pressing plate and a rotating roller, and the rotating roller is rotatably connected to the pressing frame. Two cylinders 3 are fixed on the upper end of the pressing frame, and the protruding end of the cylinder 3 is fixedly connected to the lower pressing plate;

[0016] Further, the transition mechanism includes a transition frame obliquely arranged below the pressing frame, the transition frame is U-shaped, a screw rod is rotatably provided on one side of the transition frame, the screw rod is driven by a motor 7, and a movable seat is sleeved on the outer end, a transition roller is rotatably connected to the outer end of the movable seat, a roller is rotatably provided on the other end of the transition roller, and the roller is slidably connected to the other side of the transition frame;

[0017] Furthermore, the slitting mechanism comprises a mounting frame fixed on the upper end surface of the second machine platform, two cylinders are fixed on the upper end of the mounting frame, and a slitting knife located on the inner side of the mounting frame is fixed on the extended end of the second cylinder;

[0018] Further, a bag feeding mechanism 2 is arranged on the upper end surface of the machine table 2 near the feeding side of the slitting mechanism, and the bag feeding mechanism 2 comprises two connecting rollers 1 and 2 rotating on the upper end surface of the machine table 2, the connecting roller 2 has a smaller diameter than the connecting roller 1, and is arranged on a side near the slitting mechanism, a plurality of contact belts are sleeved between the connecting rollers 1 and 2, and the connecting roller 1 is driven by a motor 6;

[0019] Furthermore, a bag feeding mechanism 1 is provided on both sides of the machine platform 1, and the bag feeding mechanism 1 includes a pressing roller and a driving roller which are arranged to rotate up and down, and the driving roller is driven by a motor 1;

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention proposes a cutting device for producing biodegradable packaging bags, which adopts an adjustment mechanism and a trimming cutter with adjustable angle to cooperate with each other to cut the edges of the packaging bags. It can continuously cut double-sided special-shaped packaging bags and regular-shaped packaging bags. Compared with the die-cutting structure, it produces less waste edges, reduces material consumption, and the waste edges produced are continuous strips without a hollow area in the middle. The volume after rolling is smaller, which is convenient for storage and transportation during subsequent recycling.

[0022] 2. The present invention proposes a cutting device for producing biodegradable packaging bags, which is provided with a bag pressing mechanism and a transition mechanism, so that during cutting, the packaging bags in the front section can continue to be conveyed, and there is no need to stop the cutting work of the packaging bags during cutting. The continuity during operation is strong and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is the overall structural diagram proposed by the present invention;

[0025] Figure 2 It is a transmission structure diagram of the packaging bag of the present invention;

[0026] Figure 3 It is a structural diagram of the machine 1 proposed in the present invention;

[0027] Figure 4 It is a structural diagram of the adjusting mechanism and the trimming knife proposed in the present invention;

[0028] Figure 5 This is a structural diagram of the second machine proposed in the present invention;

[0029] Figure 6 It is a structural diagram of the waste material winding rack proposed in the present invention.

[0030] Reference numerals:

[0031] 1. Machine 1; 2. Bag feeding mechanism 1; 21. Active roller; 22. Pressing roller; 23. Motor 1; 3. Cylinder 1; 4. Adjustment mechanism; 41. Outer frame; 42. Bidirectional screw rod; 43. Guide rod; 44. Adjustment seat; 45. Motor 2; 5. Edge trimming knife; 51. Motor 3; 52. Rotating seat; 53. Cutting knife; 54. Motor 4; 6. Waste winding rack; 61. Moving rack; 62. Transmission shaft; 63. Winding roller; 64. Self-locking universal wheel; 65. Motor Five; 7. Machine two; 8. Slitting mechanism; 81. Mounting frame; 82. Cylinder two; 83. Slitting knife; 9. Bag feeding mechanism two; 91. Connecting roller one; 92. Contact belt; 93. Connecting roller two; 94. Motor six; 10. Transition mechanism; 101. Transition frame; 102. Transition roller; 103. Screw; 104. Moving seat; 105. Motor seven; 11. Bag pressing mechanism; 111. Pressing frame; 112. Rotating roller; 113. Cylinder three; 114. Lower pressing plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] See also Figures 1 to 4 As shown, a cutting device for producing a degradable packaging bag in an embodiment of the present invention comprises a machine platform 1 and a machine platform 2 7. The upper end surface of the machine platform 1 is fixedly connected to an adjusting mechanism 4 through two cylinders 1 3. A trimming knife 5 is arranged inside the adjusting mechanism 4.

[0035] The upper end surface of the machine 2 7 is fixedly connected with a slitting mechanism 8, and the side of the machine 2 7 close to the machine 1 1 is provided with a transition mechanism 10 and a bag pressing mechanism 11. The transition mechanism 10 is used to adjust the tension of the packaging bag, and the bag pressing mechanism 11 is used to clamp the incoming packaging bag. When the packaging bag enters, it first passes through the trimming knife 5 to cut the edge of the degradable packaging bag, and then passes through the transition mechanism 10 and the bag pressing mechanism 11 in turn, and finally passes through the slitting mechanism 8 for slitting.

[0036] Among them, the adjustment mechanism 4 includes an outer frame 41, a bidirectional screw rod 42 is rotated on one side of the inner part of the outer frame 41, and a guide rod 43 is fixed on the other side. The bidirectional screw rod 42 is driven by a motor 45, and adjustment seats 44 are sleeved on both sides between the bidirectional screw rod 42 and the guide rod 43. Through the setting of the adjustment mechanism 4, the synchronous adjustment of the distance between the two trimming knives 5 can be achieved. By controlling the rotation speed and direction of the motor 45, and using the bidirectional screw rod 42 to drive the two trimming knives 5 to move towards each other, the cutting position of the trimming knives 5 is changed.

[0037] In this embodiment, there are two trimming cutters 5 which are symmetrically installed on two adjustment seats 44. The trimming cutters 5 include a rotating seat 52, which is rotatably connected to the lower end surface of the adjustment seat 44 and driven by a motor 3 51. A cutting knife 53 is rotatably arranged at the lower end of the rotating seat 52, and the cutting knife 53 is driven by a motor 4 54. The cutting knife 53 adopts a circular knife. When cutting the edge of the packaging bag, the cutting knife 53 is driven to rotate by the motor 4 54, and the two cylinders 1 3 are lowered, so that the cutting knife 53 contacts the packaging bag for cutting, and no waste edge is generated in the transition area between the front and rear packaging bags. Compared with the die-cutting structure, less waste edge is generated, thereby effectively reducing material waste.

[0038] At the same time, a rotating seat 52 driven by a motor 3 51 is provided. By controlling the forward and reverse rotation angles of the motor 3 51, the angle of the cutting knife 53 is adjusted, and the adjustment mechanism 4 is cooperated to achieve edge cutting of packaging bags of different shapes.

[0039] Specifically, when it is necessary to cut a straight edge, the angle of the cutting knife 53 is adjusted to 0 degrees (that is, the blade head is parallel to the edge of the packaging bag to be cut). As the packaging bag is conveyed, a straight cutting edge can be obtained. The lateral position is changed by the adjustment mechanism 4 to cut at different positions. When cutting an angled edge, the angle of the cutting knife 53 is adjusted to the required angle, and the lateral position is continuously changed by the adjustment mechanism 4 to achieve angled cutting. When encountering a corner, the corresponding angle of the cutting knife 53 is changed again, and the movement of the adjustment mechanism 4 is coordinated.

[0040] For cutting the edge of a curved shape, it is necessary to constantly fine-tune the angle of the cutting knife 53 and change its lateral position through the adjustment mechanism 4. For example, when cutting a packaging bag with a wavy edge, the angle of the cutting knife 53 is continuously and slightly adjusted through the rotating seat 52 according to the ups and downs of the wavy edge shape so that it can fit the tangent direction of the curve, and as the cutting position changes, the lateral position is adjusted through the adjustment mechanism 4 to complete the convenient cutting of the curve.

[0041] In this embodiment, the slitting mechanism 8 includes a mounting frame 81 fixed on the upper end surface of the machine table 7, and two cylinders 82 are fixed on the upper end of the mounting frame 81. The protruding end of the cylinder 82 is fixed with a slitting knife 83 located on the inner side of the mounting frame 81. During slitting, the cylinder 82 drives the slitting knife 83 to press down to cut the packaging bag.

[0042] A bag feeding mechanism 29 is provided on the upper end surface of the machine table 27 near the feeding side of the slitting mechanism 8. The bag feeding mechanism 29 includes two connecting rollers 1 91 and 2 93 rotating on the upper end surface of the machine table 27. The diameter of the connecting roller 2 93 is smaller than that of the connecting roller 1 91 and is provided on the side close to the slitting mechanism 8. A plurality of contact belts 92 are sleeved between the connecting rollers 1 91 and 2 93. The connecting roller 1 91 is driven by a motor 6 94. The bag feeding mechanism 29 is used to drive the packaging bag into the slitting mechanism 8. By providing two connecting rollers and the contact belt 92, the contact area between the bag feeding mechanism 29 and the packaging bag is large, thereby improving the flatness of the packaging bag and facilitating subsequent slitting.

[0043] In addition, a bag feeding mechanism 2 is provided on both sides of the machine platform 1. The bag feeding mechanism 2 includes a pressure roller 22 and an active roller 21 which are arranged to rotate up and down. The active roller 21 is driven by a motor 23. The bag feeding mechanism 2 is provided for conveying packaging bags.

[0044] It should be noted that the control method of the motor adopts a known method in the prior art, which will not be described in detail here.

[0045] Embodiment 2

[0046] See also Figure 1 and Figure 6 As shown, on the basis of the first embodiment, a waste material reeling rack 6 is provided between the machine 1 and the machine 2 7 , and the cut edges on both sides of the packaging bag can be reeled up by the waste material reeling rack 6 .

[0047] Specifically, the waste winding rack 6 includes a mobile rack 61, and a transmission shaft 62 is rotated on the lower side of the inside of the mobile rack 61, and the transmission shaft 62 is driven by a motor 65. Winding rollers 63 are rotated on both sides of the upper end of the mobile rack 61, and the transmission shaft 62 drives the winding rollers 63 to rotate through belts and pulleys. The lower end surface of the mobile rack 61 is rotatably connected to a plurality of self-locking universal wheels 64, and the cut edges of the packaging bag are rolled up by the rotating winding rollers 63. A space is left between the two winding rollers 63 to facilitate the removal of the waste edges after rolling up. In addition, since the cut waste edges are cut by the cutting knife 53, there will be no hollow area in the middle like die cutting, and the width after rolling is smaller, which is more conducive to subsequent storage and transportation.

[0048] The bottom of the movable frame 61 is provided with a self-locking universal wheel 64, which can be moved, so as to facilitate the quick pulling out of the movable frame 61 to remove the waste edge.

[0049] Embodiment 3

[0050] See also Figures 1 to 2 as well as Figure 5 As shown, on the basis of the first embodiment, in order to ensure the continuity of the conveying of the packaging bag and the conveying process is not interrupted by the action of the slitting mechanism 8, the present embodiment is provided with a bag pressing mechanism 11 and a transition mechanism 10, wherein the end of the machine platform 2 7 close to the machine platform 1 1 is provided with an inclined plane, the bag pressing mechanism 11 is installed on the inclined plane, the bag pressing mechanism 11 comprises a pressing frame 111, the lower pressing plate 114 and a rotating roller 112 are respectively provided on the upper and lower sides of the pressing frame 111, the rotating roller 112 is rotatably connected to the pressing frame 111, and two cylinders 3 113 are fixed to the upper end of the pressing frame 111, and the protruding end of the cylinder 3 113 is fixedly connected to the lower pressing plate 114;

[0051] The transition mechanism 10 includes a transition frame 101 obliquely arranged below the pressing frame 111, the transition frame 101 is U-shaped, a screw rod 103 is rotatable on one side of the transition frame 101, the screw rod 103 is driven by a motor 105, and a moving seat 104 is sleeved on the outer end, and a transition roller 102 is rotatably connected to the outer end of the moving seat 104, and a roller is rotatably connected to the other end of the transition roller 102, and the roller is slidably connected to the other side of the transition frame 101. When the packaging bag passes by, it first bypasses the bottom of the transition roller 102, and then passes the upper side of the rotating roller 112. The transition roller 102 can be driven by the screw rod 103 to adjust its height, which can provide tension. The function of the packaging bag is that, at the same time, the position of the transition roller 102 is dynamic. When the slitting mechanism 8 cuts the packaging bag, the cylinder three 113 of the bag pressing mechanism 11 is actuated to drive the lower pressure plate 114 to press down, so that the end of the packaging bag close to the slitting mechanism 8 is temporarily fixed, the bag feeding mechanism 29 stops, and the part of the packaging bag close to the machine 27 stops conveying, while the part of the packaging bag close to the machine 1 continues to convey. At the same time, the screw 103 rotates, driving the transition roller 102 to drop a distance. After the transition roller 102 is lowered, it can ensure that the packaging bag is continuously tensioned. After the slitting mechanism 8 completes one slitting work, the transition roller 102 is reset.

[0052] It should be noted that the distance that the transition roller 102 is lowered is set according to the conveying speed of the packaging bag in the previous process, so as to ensure that the packaging bag can be tensioned after the transition roller 102 is lowered;

[0053] In addition, the conveying speed of the bag feeding mechanism 2 9 is faster than that of the bag feeding mechanism 1 2 , so that the packaging bag can always remain in a tensioned state during the resetting process of the transition roller 102 .

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A cutting device for producing biodegradable packaging bags, comprising a first machine (1) and a second machine (7), characterized in that: The upper end surface of the machine platform (1) is fixedly connected to an adjustment mechanism (4) via two cylinders (3), and a trimming knife (5) is arranged inside the adjustment mechanism (4); The upper end surface of the second machine (7) is fixedly connected with a slitting mechanism (8), and a transition mechanism (10) and a bag pressing mechanism (11) are arranged on the side of the second machine (7) close to the first machine (1), wherein the transition mechanism (10) is used to adjust the tension of the packaging bag, and the bag pressing mechanism (11) is used to clamp the incoming packaging bag; The adjustment mechanism (4) comprises an outer frame (41), a bidirectional screw rod (42) is rotatably mounted on one side of the inner portion of the outer frame (41), and a guide rod (43) is fixedly mounted on the other side of the inner portion of the outer frame (41), the bidirectional screw rod (42) is driven by a second motor (45), and an adjustment seat (44) is sleeved on both sides between the bidirectional screw rod (42) and the guide rod (43); The trimming knife (5) has two and is symmetrically mounted on the two adjustment seats (44). The trimming knife (5) comprises a rotating seat (52). The rotating seat (52) is rotatably connected to the lower end surface of the adjustment seat (44) and driven by a third motor (51). A cutting knife (53) is rotatably mounted at the lower end of the rotating seat (52). The cutting knife (53) is driven by a fourth motor (54). A waste material winding rack (6) is provided between the machine platform 1 (1) and the machine platform 2 (7).

2. A cutting device for producing biodegradable packaging bags according to claim 1, characterized in that: The waste winding rack (6) comprises a movable rack (61), a transmission shaft (62) is rotatably arranged on the lower side of the movable rack (61), the transmission shaft (62) is driven by a motor (65), winding rollers (63) are rotatably arranged on both sides of the upper end of the movable rack (61), the transmission shaft (62) drives the winding rollers (63) to rotate via a belt and a pulley, and a plurality of self-locking universal wheels (64) are rotatably connected to the lower end surface of the movable rack (61).

3. The cutting device for producing a biodegradable packaging bag according to claim 1, characterized in that: One end of the machine platform 2 (7) close to the machine platform 1 (1) is arranged as an inclined plane, and the bag pressing mechanism (11) is installed on the inclined plane. The bag pressing mechanism (11) comprises a pressing frame (111), and a lower pressing plate (114) and a rotating roller (112) are arranged on the upper and lower sides of the pressing frame (111), respectively. The rotating roller (112) is rotatably connected to the pressing frame (111), and two cylinders (113) are fixed on the upper end of the pressing frame (111), and the protruding end of the cylinder (113) is fixedly connected to the lower pressing plate (114).

4. A cutting device for producing biodegradable packaging bags according to claim 3, characterized in that: The transition mechanism (10) comprises a transition frame (101) obliquely arranged below a pressing frame (111), the transition frame (101) being U-shaped, a screw rod (103) being rotatable on one side of the transition frame (101), the screw rod (103) being driven by a motor (105), and a movable seat (104) being sleeved on the outer end, a transition roller (102) being rotatably connected to the outer end of the movable seat (104), a roller being rotatably provided on the other end of the transition roller (102), and the roller being slidably connected to the other side of the transition frame (101).

5. The cutting device for producing a biodegradable packaging bag according to claim 1, characterized in that: The slitting mechanism (8) comprises a mounting frame (81) fixed on the upper end surface of the second machine platform (7), two second cylinders (82) are fixed on the upper end of the mounting frame (81), and a slitting knife (83) located on the inner side of the mounting frame (81) is fixed on the protruding end of the second cylinder (82).

6. A cutting device for producing biodegradable packaging bags according to claim 5, characterized in that: A bag feeding mechanism 2 (9) is arranged on the upper end surface of the machine table 2 (7) near the feeding side of the slitting mechanism (8), and the bag feeding mechanism 2 (9) comprises two connecting rollers 1 (91) and 2 (93) rotating on the upper end surface of the machine table 2 (7), the diameter of the connecting roller 2 (93) is smaller than that of the connecting roller 1 (91), and the connecting roller 2 (93) is arranged on a side near the slitting mechanism (8), a plurality of contact belts (92) are sleeved between the connecting roller 1 (91) and the connecting roller 2 (93), and the connecting roller 1 (91) is driven by a motor 6 (94).

7. The cutting device for producing a degradable packaging bag according to claim 1, characterized in that: A bag feeding mechanism (2) is provided on both sides of the machine platform (1), and the bag feeding mechanism (2) comprises a pressing roller (22) and an active roller (21) which are arranged to rotate up and down, and the active roller (21) is driven by a motor (23).

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